@article{1077476397,
author = {Mathis, H. F.},
title = {An isoperimetric problem for multiple integrals in the
calculus of variations},
journal = {Duke Math. J.},
volume = {18},
number = {1},
year = {1951},
pages = { 177-184},
language = {en},
url = {http://dml.mathdoc.fr/item/1077476397}
}
Mathis, H. F. An isoperimetric problem for multiple integrals in the
calculus of variations. Duke Math. J., Tome 18 (1951) no. 1, pp. 177-184. http://gdmltest.u-ga.fr/item/1077476397/